Toyo Open County AT III (AT3)

Just installed a set of AT IIIs to replace my Duratracs (55k miles!!!). Running LT 285/70R17 Cs. It is so QUIET compared to the Duras!!! Per Toyo's Load and Inflation Tables, I'm estimating these should be around 37 psi. Will give it a go and see how they do. I was running my Duratracs (LT265/70R17 Cs) @ 38 psi (vs a calculated 43ish psi), so I may need to come down a bit from 37 psi for the AT IIIs. Just a starting point. What's everyone else running theirs at?
 
Any off road feed back? I have the AT II and i have had two side walls get hair line punctures in death valley and anza. Also snow performance is less to be desired.

If anyone has feedback on either, please report back.
 
I'm still debating about which sizing to go with for these. E load is not an option. Which just leaves P265, P285, or LT285 C.
[MENTION=75328]DannyLlama[/MENTION] & [MENTION=275184]El Dusty[/MENTION]
You mentioned long term tread life on the Toyos, are you running the LT or the P rated versions? I think I remember reading somewhere that there's a big difference between P rated & LT tires for silica in the compound.
 
I'm still debating about which sizing to go with for these. E load is not an option. Which just leaves P265, P285, or LT285 C.
<!-- BEGIN TEMPLATE: dbtech_usertag_mention --> @DannyLlama <!-- END TEMPLATE: dbtech_usertag_mention --> & <!-- BEGIN TEMPLATE: dbtech_usertag_mention --> @El Dusty <!-- END TEMPLATE: dbtech_usertag_mention -->
You mentioned long term tread life on the Toyos, are you running the LT or the P rated versions? I think I remember reading somewhere that there's a big difference between P rated & LT tires for silica in the compound.


They do offer a 285/75 C and a 35x11.5 C...
 
I'm still debating about which sizing to go with for these. E load is not an option. Which just leaves P265, P285, or LT285 C.
[MENTION=75328]DannyLlama[/MENTION] & [MENTION=275184]El Dusty[/MENTION]
You mentioned long term tread life on the Toyos, are you running the LT or the P rated versions? I think I remember reading somewhere that there's a big difference between P rated & LT tires for silica in the compound.

I had LTs in E load. From my experience toyos compound in general lasts longer than the competition. I think the LT compound is also always going to be tougher and harder than the P metrics. A 3/4 ton truck would likely roast a softer rubber with the increased pressures the tires would see.

My only comment here is I'm sure there is some tradeoff. As you loose compound softness you would also see reduction in traction? I'm thinking this softness effect is similar to how winter tires stay soft in extreme cold.

The science behind winter tires and how they work - The Globe and Mail
 
Any off road feed back? I have the AT II and i have had two side walls get hair line punctures in death valley and anza. Also snow performance is less to be desired.

If anyone has feedback on either, please report back.

+1

We've had fairly good experiences with the AT IIs off road. However, performance on wet (especially inclined) roads and snow covered surfaces (regardless of snow density) seems to be lacking. With that said, at 66k miles the tires have a good amount of tread left, and dry road performance is still impressive.
 
These are what I wound up with on mine after 2 square Falken's that got warrantied and a set of C load BFG's that just couldn't be remotely balanced. I went with the P-metric 285/70/17's and I have them on Method NV's. Previously I had run the stock Duelers and Grabber ATX's in the stock size. These are as smooth on the road as the Duelers and a lot quieter than the Generals, Falkens, and the BFG's. Supposedly they are geared towards wet and snow performance. I don't run snows so that was important to me. I've probably put 4K miles on them so far and I'm glad I bought them. Of course I haven't tried them off-road yet. But I do most of that on my motorcycle anyway.
 
I'm still debating about which sizing to go with for these. E load is not an option. Which just leaves P265, P285, or LT285 C.
[MENTION=75328]DannyLlama[/MENTION] & [MENTION=275184]El Dusty[/MENTION]
You mentioned long term tread life on the Toyos, are you running the LT or the P rated versions? I think I remember reading somewhere that there's a big difference between P rated & LT tires for silica in the compound.

I have E rated and wear has been great. No noise either. I love the tire with the two mentioned issues.

1. sidewall isn't holding up as well as i thought, but then again, if it was a P tire it could have just ripped apart? IDK

2. Snow traction is almost non existent . Though, in the rain they do well. Strange
 
I had LTs in E load. From my experience toyos compound in general lasts longer than the competition. I think the LT compound is also always going to be tougher and harder than the P metrics. A 3/4 ton truck would likely roast a softer rubber with the increased pressures the tires would see.

My only comment here is I'm sure there is some tradeoff. As you loose compound softness you would also see reduction in traction? I'm thinking this softness effect is similar to how winter tires stay soft in extreme cold.

The science behind winter tires and how they work - The Globe and Mail

I have E rated and wear has been great. No noise either. I love the tire with the two mentioned issues.

1. sidewall isn't holding up as well as i thought, but then again, if it was a P tire it could have just ripped apart? IDK

2. Snow traction is almost non existent . Though, in the rain they do well. Strange


The E Loads aren't an option for me because 98% of the time my truck is running it's just me in it. I ran the KO2 E loads for 21kmi before ditching them, the horrible ride was just one of the problems I had with those.
The lack of snow traction was one of the biggest complaints from the AT2 that was supposed to be improved in the AT3. I've been trying to read up more on it, but apparently each manufacturer keeps the actual silica / silane mixtures a closely guarded secret. There's got to be more than a slight difference in compound between the P & LT tires with a 15k mi difference in the warranty. I am left wondering if that would be enough to cause noticeable difference in cold weather/snow/ice grip.
Now that I'm thinking more about weight, I've also wonder if you're running a tire designed for X weight on it, and you've only got 60% of X that the tire will not provide as much grip as designed because it's not being deformed enough by the weight put on it. Sure the sidewall will flex more with a lower psi, but if the actual tread isn't deformed as designed that's got to impact grip/traction too. Maybe an unrealized drawback of going to E load?

They do offer a 285/75 C and a 35x11.5 C...

While my front are Icon LT, the rear is just stock. I doubt I'd be able to run those without reconfiguring more of the suspension than I'd like to get into.
 
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Thanks to all the posters in this thread, I'm a newb and doing all of my research now and very much appreciate all of the input.

I have a '14 trail and I'm about to purchase a second set of OEM rims so I can have two sets of tires to swap out for summer/winter.

I think after reading all off this I will be purchasing these tires as I slowly try to get my car ready for winter. The Joe Bacal review was helpful but I agree on the not so aggressive sidewall. I do like the look of other tires but if these come with a 65k warranty and run quiet I might not even need a second set. I apologize if this questions is slightly off topic but does anyone else keep two sets of tires/rims and swap them out with the seasons?
 
2. Snow traction is almost non existent . Though, in the rain they do well. Strange

Strange indeed, and not something I wanted to hear. I'll take the good performance in the rain, but if the tires are worse than AT IIs in snow I might have to pass. Hopefully, the snow performance is based mostly on the load rating.
 
While my front are Icon LT, the rear is just stock. I doubt I'd be able to run those without reconfiguring more of the suspension than I'd like to get into.


I hear what your talking. I think you'd be fine with the 285/75's and just some bump stop extensions. I frankly thought the bigger impact of 34's was the hit on power.
 
Really Happy!

I thought I really liked my Firestone Destination ATs. Until they installed the Toyo Open Country AT III last night. I put 265/70 17's on it because I wasn't sure I wanted to go up to 285's and change the spare and all that. These tires balanced up perfectly on my FN FX Pros and the ride and noise levels are very close to the original Bridgestones from the factory. I literally couldn't tell I was riding on all terrain tires. Here's hoping the off-road performance is as good as my initial impression on road. More to come....

Eric
 
I have had the AT3 285/70/17 P/SL on for a little over a thousand miles now. I love them so far.

They are slightly bigger than the 285/70/17 P Terra Grappler G2s that they replaced. I had to re-trim my front bumper, and I ended up getting Rokbloks mudflaps to stop the rubbing on slow turns.

They actually seemed a bit louder than the Grapplers when I first got them, but they definitely quieted down after a few hundred miles, and they are quieter overall now.

I haven't really pushed them off-road, I only overland, For that they have done great. They had no troubles pulling our small travel trailer in loose rock uphill.

Its summer in California (we are pretty much on fire at this point) so I haven't tested the wet or snow traction. But the on road feel is much better than the Grapplers.
 

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